Torch



g- 1950 H. SCHRADER 2,518,257

' TORCH Filed Oct. 21, 1947 Patented Aug. 8, 1950 UNITED STATES PATENTOFFICE 3 Claims.

' This invention relates to certain novel improvements in torches andhas for its principal object the provision of an improved constructionof this .ing pan utilized to vaporize the fuel within the torch tocreate a vapor pressure which, when realized, causes a continuous andforced flow of vapor fuel to a burner tip located within a blow tube andwhich blow tube, when heated, will, upon extinction of the pilot burner,vaporize the fuel and cause a continuous and uninterrupted fuel supplyto the burner tip to the extent of producing a fuel flow of steady,uniform, and intense heat.

Another object of the invention is the provision of a torch in which theparts will be so constructed and arranged, one with respect to 'theother as will permit of easy assembly and economical manufacture.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings showing the preferred form of construction, and in which:

Fig. 1 is a vertical cross sectional detail view of the invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a sectional detail view of a burner tip embodied in theinvention;

Fig. 4 is a fragmentary sectional detail view taken substantially online 4-4 of Fig. 2; and

Fig. 5 is a side elevational View, partly in section, of a. torchillustrating a modified form of construction over that shown in Fig. 1.

In the drawings, wherein there is illustrated the preferred form ofconstruction of my invention, l0 indicates a tank within which the fuelto be vaporized is adapted to be contained. For convenience ofmanufacture and for appearance lower peripheral edge portion with anoutwardly flaring flange I l which serves to support the tank upon asuitable support.

Within this tank In and adjacent the flange H is a bottom wall l2 whichmay be welded or otherwise secured to the adjacent walls of the tank.The top wall 13 of the tank has an opening i4 formed therein throughwhich the fuel may be admitted into the tank, and this opening isnormally closed by a removable plug l5. Formed either as an integralpart of the wall 12, or as a separe te unit thereof and attached theretoin any suitable manner, is a tube It. In the form shown in Fig. 1, thistube I6 projects laterally from the adjacent side Wall of the tankwhereas the tube 13' shown in Fig. 5, which is a counterpart of the tube16, projects vertically through the top substantially bell-shaped andprovided at its wall of the tank, in this form of construction theremovable plug :5 being threaded into an opening [4' formed in the sidewall of the tank l0.

A starting pan is indicated at IT. This starting pan ll comprises a sidewall l8 which has its upper peripheral edge portion [9 curved to conformwith the adjacent walls of the tank l0. At predetermined points the sidewall 18 is provided with outwardly pressed protuberances 2B which areadapted to project into openings 2| to removably attach the pan H to thetank l0, these protuberances 2B and the side wall l8 being provided withair openings 22, whereby to furnish oxygen to the fuel to be burnedwithin the pan [1.

Secured in any suitable manner to the botto wall I2 and openingcommunication between the tank It] above the bottom wall [2 and the panI1, is a, conduit 23 having a communicating passage 1 normally closed bya valve stem 25 having a suitable operating'handle 2B. The pan I1 is ofa height less than the distance between the bottom edge 21 of the flangel I and the bottom wall !2, so that the bottom of the pan will bedisposed above the supporting surface, whereby to prevent burning,scorching, or heating of such surface.

Arranged within the tank ID is a conduit 28, the upper end of whichterminates short of the top wall 13 of the tank and is provided withsuitable openings 29' to permit the flow of vapor from the tank into andthrough this conduit 28. This conduit 28 communicates with a valvestructure 29 includin a valve stem 30 operable by a handle 3| whichcontrols the flow of vapor from the conduit 28 to a burner tip 32. Thisburner tip 32 projects into the tube I6 and has a curved tip 33' whichis disposed directly over an orifice 34 formed in the shank 35 of thistip, whereby the burning vapor will be directed against the curvedportion 32 to heat the tube I6.

To complete the invention there is provided a suitable handle 36 bywhich the torch may be moved conveniently about.

To start operation of the torch, the valve stem is moved to opencommunication through the passage 24. This allows a predetermined amountof fuel to flow into the startingpan H. The valve stem 25 is now movedto close the passage and the fuel ignited by insertion of a lighted'match through any one of the openings 22. This burning fuel will heatthe tank HI, vaporize the fuel therein, and the pressure thus created bythe heated tank will force the vapor through the openings 29' downwardlythrough the conduit 28, whereupon by the opening of the valve '29 thevaporized fuel will find exit through the orifice 3 -1 and be therebyignited from the burning fuel within the pan H. The torch, when oncestartedin this manner, acts: with regularity, free from risk ofexplosion, and with a single flame, without any secondary source ofheat.

The torch will be operated effectively .ini-any position whetherupright, inclined, horizontal, or inverted.

.A torch constructed in accordance with the disclosure herein isextremely efficient and is :applicable toal sorts of uses.

The efficiency of the heating means by which gas vapor is generated inth tank is adequate to maintain ahigh pressure within the tank once thetorch has been set operation.

While Ihave illustrated anddescribed the pre- 'ferred form ofconstruction for carrying my invariations and modifications as comewithin the scope of the appended claims.

Having thus described .my invention, What I claim'as new and desire toprotect by Letters Patent is:

1. A torch comprising a tank-having a supporting base, a partition inthe tank above the basedividing the torchinito a bottom compartment anda fuel chamber, a starting pan removably attached to the base within thebottom oompartment, means for admitting a predetermined amount of fuelfrom the fuel chamber to the starting pan, a tube carried by thepartition and extending upwardly through the fuel chamber and exteriorthereof, a conduit carried by the partition within the fuel chamber andhaving an upper end portion terminating short ofthe top wall of the fuelchamber, a valve structure associated with the conduit for controllingpassage of vaporized fuel therethrough, and a burner tip communicatingwith said conduit through the valve structure and extending into thetube, said burner tip having a laterally turned end portion disposed inalignment with an orifice formed in said burner tip.

2. A torch comprising a tank having a supporting base, a partition inthe tank above the base dividing the torch into a bottom compartment anda fuel chamber, a starting pan removably attached to the base within thebottom compartment, means for admitting a predetermined amount of fuelfrom the fuel chamber to 'the'starting pan, a tube carried by thepartition and extending upwardly through the fuel chamber and exteriorthereof, a conduit carried by the partition within the fuel chamber andhaving an upper end portion terminating short of the top wall of thefuel chamber, a valve structure associated with the conduit forcontrolling passage of vaporized fuel therethrough, a burner tipcommunicating with said conduit through the valve structure andextending into the tube,

said burner tip having a laterally turned end portion disposed inalignment with an orifice formed in said burner tip, andmeansfor-detachably connecting the starting pan to thesupporting base.

3. A torch comprising a tank formedsubstantially bell-shaped in crosssection to provid an outwardly flaring supporting flange, a tube carriedby the bottom wall of the tank and extending therethroughand exteriorthereof, anondu-it carried by said bottom wall and having an upperendportion terminating'short of the top wall of the tank, a valvestructure associated with the conduit for controlling communication ofvaporized fuel therethrough, a burner tip carried by saidvalve structureand extending into said tube and having a laterally turned end portiondisposed in alignment with an exit orifice formed .i-n'said tip, and astarting burner carried by the torch beneath the bottom wall thereof.

HENRY SCI-IRADEB.

CES- CITED The following references are of record-in {the file of thispatent:

UNITED STATES PATENTS Number Name Date 623,555 Otten et' a1. Apr. 25,1899 1,052,635 Williams Feb. 11, 1913 1,074,804 McKee Oct. 7, 19132,120,078 Schrader June 7,-1938

